1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d6ef4be175f1ab6b826919938c972187fd33df1ce1b7450b315c5d5ef0a693. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/919a02a7-2344-483f-b8d5-d593ad822cb4.json and https://artists.proofprofile.net/proofs/artist/919a02a7-2344-483f-b8d5-d593ad822cb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'étudiante et Mr Henri (Constance thème)
L'étudiante et Monsieur Henri (Bande originale du film d'Ivan Calberac)
Baby Phone (Original Motion Picture Soundtrack)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0509defc56ff7f22b0654ef89282136bb13af06d7d9991daefc93419bce7e55. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR8E71702150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75453404664617438fc6516353bc734a5e8be65e58c5b43128956106bf8a112b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR411702005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb9bc4738f03eae513bf0b85185bf1c041e9f0f26ab54b408fd4f4f77410319. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:44:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR411702012.
Venise n'est pas en Italie (Original Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50325d60e236f231501fa3b3bbf0049756e2379006681937fae9d6f2e742879. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEG1916912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697d668de7b9cf5a5f685ca4bf6480f216f6b78145eccdd3534a80397984beb3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEG1916923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f2bd48dc82fa1cd74212ba9829e151aef7bad71060d6d5fa4ee4c973f744c7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEG1916943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1232e787175f6cdbc42224ab92a8161f53e34240d83096806a5ba77d4ebbd8a4. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGG2270732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e1008a191fec9eda3e60aa1057e1339e43ca138e20c1122ad5af8ee003c69a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGG2270736.
La dégustation (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c00ed2fff7bed076eaac4035181f5f2176df8032a99578a881b100512bd7ee8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452239892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4950f87c84db1bc7242fec6fcbd6d42471e2d67ee39d97ae10bcbe6a356d1d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452239902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cfd8a86b63380a5dd11b7b6cca6085383cc3da80db98837ad076585d618446. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452239910.
Diva / Dream (Extrait du film "Chien et Chat")
Année Zéro (Musique Originale de la Série)
N'avoue jamais (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a403be4c8cf1fa40627519ef62a169a66eefa273722ab1f6c882ac25764eb5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12420973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eb4fb0e5c20189813a8d14ee73df0c1020a6ab57f97da094b6fd2052cf9e6b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12420974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d42b8c3705b38efa3376f39bb34f29875debcfd815fd4a9786b16ffd54e788. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12420982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c98c93e85200b78e925f63be05eb22e287a0ae105051306340938b67f54629b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:22:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12420985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19527cc4b505a8fcf6a58744d7ffed77a80994a8b78387211cf2fa3abb1517c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12420990.